Fenton-like oxidation of an azo dye using mesoporous Fe/TiO2 catalysts prepared by a microwave-assisted hydrothermal process

2014
Authors
Nesic, JelenaManojlović, Dragan

Jović, Milica
Dojčinović, Biljana

Vulić, Predrag

Krstić, Jugoslav

Roglić, Goran

Article (Published version)
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Fe-doped TiO2 photocatalysts with different contents of Fe (0.5, 1.6, 3.4 and 6.4 %) were synthesized by a microwave-hydrothermal method and characterized by X-ray diffraction analysis, N-2 physisorption at 77 K and UV-Vis spectrometry. The characterization showed that the Fe ions were highly dispersed in the TiO2 lattice. It was found that all the synthesized catalysts had a mesoporous structure and that Fe-doping increased the BET surface area. The UV-Vis study showed that the absorption spectra were shifted to longer wavelengths (red shift) with increasing dopant concentration. The photocatalytic activity of the samples was evaluated by the decolorization of the textile dye Reactive Blue 52 (RB) in aqueous solutions under sun-like radiation in the presence of H2O2 (a heterogeneous photo-Fenton process). The photocatalyst with 3.4 % Fe was found to be the most efficient in the presence of H2O2. The effect of the initial pH of the dye solution was assessed and dissolution of iron ions... was studied as a function of pH value. It was concluded that decolorization was more favorable in acidic pH, and that at pH values >4, the release of Fe ions into the solution was negligible. Photocatalytic degradation of 4-chlorophenol (4-CP) was investigated under the optimal conditions and it was shown that the catalyst was capable of degrading colorless pollutants.
Keywords:
Fe/TiO2 / heterogeneous photo-Fenton / Reactive Blue 52 / 4-chlorophenolSource:
Journal of the Serbian Chemical Society, 2014, 79, 8, 977-991Publisher:
- Serbian Chemical Soc, Belgrade
Funding / projects:
- Application of advanced oxidation processes and nanostructured oxide materials for the removal of pollutants from the environment, development and optimisation of instrumental techniques for efficiency monitoring (RS-172030)
- Rational design and synthesis of biologically active and coordination compounds and functional materials, relevant for (bio)nanotechnology (RS-172035)
DOI: 10.2298/JSC131001143N
ISSN: 0352-5139
WoS: 000340980700007
Scopus: 2-s2.0-84906708253
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IHTMTY - JOUR AU - Nesic, Jelena AU - Manojlović, Dragan AU - Jović, Milica AU - Dojčinović, Biljana AU - Vulić, Predrag AU - Krstić, Jugoslav AU - Roglić, Goran PY - 2014 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/1421 AB - Fe-doped TiO2 photocatalysts with different contents of Fe (0.5, 1.6, 3.4 and 6.4 %) were synthesized by a microwave-hydrothermal method and characterized by X-ray diffraction analysis, N-2 physisorption at 77 K and UV-Vis spectrometry. The characterization showed that the Fe ions were highly dispersed in the TiO2 lattice. It was found that all the synthesized catalysts had a mesoporous structure and that Fe-doping increased the BET surface area. The UV-Vis study showed that the absorption spectra were shifted to longer wavelengths (red shift) with increasing dopant concentration. The photocatalytic activity of the samples was evaluated by the decolorization of the textile dye Reactive Blue 52 (RB) in aqueous solutions under sun-like radiation in the presence of H2O2 (a heterogeneous photo-Fenton process). The photocatalyst with 3.4 % Fe was found to be the most efficient in the presence of H2O2. The effect of the initial pH of the dye solution was assessed and dissolution of iron ions was studied as a function of pH value. It was concluded that decolorization was more favorable in acidic pH, and that at pH values >4, the release of Fe ions into the solution was negligible. Photocatalytic degradation of 4-chlorophenol (4-CP) was investigated under the optimal conditions and it was shown that the catalyst was capable of degrading colorless pollutants. PB - Serbian Chemical Soc, Belgrade T2 - Journal of the Serbian Chemical Society T1 - Fenton-like oxidation of an azo dye using mesoporous Fe/TiO2 catalysts prepared by a microwave-assisted hydrothermal process VL - 79 IS - 8 SP - 977 EP - 991 DO - 10.2298/JSC131001143N ER -
@article{ author = "Nesic, Jelena and Manojlović, Dragan and Jović, Milica and Dojčinović, Biljana and Vulić, Predrag and Krstić, Jugoslav and Roglić, Goran", year = "2014", abstract = "Fe-doped TiO2 photocatalysts with different contents of Fe (0.5, 1.6, 3.4 and 6.4 %) were synthesized by a microwave-hydrothermal method and characterized by X-ray diffraction analysis, N-2 physisorption at 77 K and UV-Vis spectrometry. The characterization showed that the Fe ions were highly dispersed in the TiO2 lattice. It was found that all the synthesized catalysts had a mesoporous structure and that Fe-doping increased the BET surface area. The UV-Vis study showed that the absorption spectra were shifted to longer wavelengths (red shift) with increasing dopant concentration. The photocatalytic activity of the samples was evaluated by the decolorization of the textile dye Reactive Blue 52 (RB) in aqueous solutions under sun-like radiation in the presence of H2O2 (a heterogeneous photo-Fenton process). The photocatalyst with 3.4 % Fe was found to be the most efficient in the presence of H2O2. The effect of the initial pH of the dye solution was assessed and dissolution of iron ions was studied as a function of pH value. It was concluded that decolorization was more favorable in acidic pH, and that at pH values >4, the release of Fe ions into the solution was negligible. Photocatalytic degradation of 4-chlorophenol (4-CP) was investigated under the optimal conditions and it was shown that the catalyst was capable of degrading colorless pollutants.", publisher = "Serbian Chemical Soc, Belgrade", journal = "Journal of the Serbian Chemical Society", title = "Fenton-like oxidation of an azo dye using mesoporous Fe/TiO2 catalysts prepared by a microwave-assisted hydrothermal process", volume = "79", number = "8", pages = "977-991", doi = "10.2298/JSC131001143N" }
Nesic, J., Manojlović, D., Jović, M., Dojčinović, B., Vulić, P., Krstić, J.,& Roglić, G.. (2014). Fenton-like oxidation of an azo dye using mesoporous Fe/TiO2 catalysts prepared by a microwave-assisted hydrothermal process. in Journal of the Serbian Chemical Society Serbian Chemical Soc, Belgrade., 79(8), 977-991. https://doi.org/10.2298/JSC131001143N
Nesic J, Manojlović D, Jović M, Dojčinović B, Vulić P, Krstić J, Roglić G. Fenton-like oxidation of an azo dye using mesoporous Fe/TiO2 catalysts prepared by a microwave-assisted hydrothermal process. in Journal of the Serbian Chemical Society. 2014;79(8):977-991. doi:10.2298/JSC131001143N .
Nesic, Jelena, Manojlović, Dragan, Jović, Milica, Dojčinović, Biljana, Vulić, Predrag, Krstić, Jugoslav, Roglić, Goran, "Fenton-like oxidation of an azo dye using mesoporous Fe/TiO2 catalysts prepared by a microwave-assisted hydrothermal process" in Journal of the Serbian Chemical Society, 79, no. 8 (2014):977-991, https://doi.org/10.2298/JSC131001143N . .